NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT
The paper aims at the numerical simulation of the wave propagation in compressive Split Hopkinson Pressure Bar (SHPB) experiment. The paper deals with principles of SHPB measurement, optimisation of a numerical model and techniques of pulse shaping. The parametric model of the typical SHPB configura...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2019-12-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6017 |
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| author | Radim Dvořák Petr Koudelka Tomáš Fíla |
| author_facet | Radim Dvořák Petr Koudelka Tomáš Fíla |
| author_sort | Radim Dvořák |
| collection | DOAJ |
| description | The paper aims at the numerical simulation of the wave propagation in compressive Split Hopkinson Pressure Bar (SHPB) experiment. The paper deals with principles of SHPB measurement, optimisation of a numerical model and techniques of pulse shaping. The parametric model of the typical SHPB configuration developed for LS-DYNA environment is introduced and optimised (in terms of element size and distribution) using the sensitivity study. Then, a parametric analysis of a geometric properties of the pulse shaper is carried out to reveal their influence on a shape of the incident pulse. The analysis is algorithmized including the pre- and post-processing routines to enable automated processing of numerical results and comparison with the experimental data. Results of the parametric analysis and the influence of geometric properties of the pulse shaper (diameter, length) on the incident wave are demonstrated. |
| format | Article |
| id | doaj-art-d1a6b2e080f545bc994037512683dcc1 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2019-12-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-d1a6b2e080f545bc994037512683dcc12025-08-20T03:39:14ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822019-12-01250253110.14311/APP.2019.25.00254767NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENTRadim Dvořák0Petr Koudelka1Tomáš Fíla2Czech Technical University in Prague, Faculty of Transportation Sciences, Konviktská 20, 110 00 Prague, Czech RepublicCzech Technical University in Prague, Faculty of Transportation Sciences, Konviktská 20, 110 00 Prague, Czech RepublicCzech Technical University in Prague, Faculty of Transportation Sciences, Konviktská 20, 110 00 Prague, Czech RepublicThe paper aims at the numerical simulation of the wave propagation in compressive Split Hopkinson Pressure Bar (SHPB) experiment. The paper deals with principles of SHPB measurement, optimisation of a numerical model and techniques of pulse shaping. The parametric model of the typical SHPB configuration developed for LS-DYNA environment is introduced and optimised (in terms of element size and distribution) using the sensitivity study. Then, a parametric analysis of a geometric properties of the pulse shaper is carried out to reveal their influence on a shape of the incident pulse. The analysis is algorithmized including the pre- and post-processing routines to enable automated processing of numerical results and comparison with the experimental data. Results of the parametric analysis and the influence of geometric properties of the pulse shaper (diameter, length) on the incident wave are demonstrated.https://ojs.cvut.cz/ojs/index.php/APP/article/view/6017shpb, pulse shaping, finite element method, explicit dynamics |
| spellingShingle | Radim Dvořák Petr Koudelka Tomáš Fíla NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT Acta Polytechnica CTU Proceedings shpb, pulse shaping, finite element method, explicit dynamics |
| title | NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT |
| title_full | NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT |
| title_fullStr | NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT |
| title_full_unstemmed | NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT |
| title_short | NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT |
| title_sort | numerical modelling of wave shapes during shpb measurement |
| topic | shpb, pulse shaping, finite element method, explicit dynamics |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6017 |
| work_keys_str_mv | AT radimdvorak numericalmodellingofwaveshapesduringshpbmeasurement AT petrkoudelka numericalmodellingofwaveshapesduringshpbmeasurement AT tomasfila numericalmodellingofwaveshapesduringshpbmeasurement |